1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65796bc01fc521d02da3be3d9a0511e780810a8f58c2d678a8bd05972e32ecab. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d25ec08-f15d-4717-84a0-0fbdbb3d17e6.json and https://artists.proofprofile.net/proofs/artist/6d25ec08-f15d-4717-84a0-0fbdbb3d17e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Humildes do Som Coletivo, Vol. 2 (LADO B)